VOA慢速英语:Vietnam's Growing Middle Class Expected to Double by 2020(翻译)

短语讲解：

1. The Boston Consulting Group says Vietnam's "middle and affluent class" is expected to double to 33 million people by 2020.

be expected to 被期待做某事; 有望做某事; 期许
例句：You will be expected to work on Saturdays.
你们星期六要上班。

2. They fill up at night with loud groups of people showing off their Apple and Samsung mobile phones.

show off 使突出; 炫耀，卖弄
例句：She did a quick twirl to show off her dress.
她轻快地一转身,炫耀自己所穿的衣服。

3. U.S.-based computer company, Dell, says people prefer different companies depending on where they live in the country.

depend on 依赖; 相信; 信赖
例句：Yon may depend on it that they will support you.
你相信好了，他们会支持你的。
live in 住在学习[工作]的地方; 住在（某地）
例句：We used to live in Shanghai but now we live in Beijing.
我们以前住在上海，但现在住在北京。